CODEWITHSUNDEEP
androidtelephonymanager
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Reputation: 6382

How to not fire PhoneStateListener.CALL_STATE_RINGING if already talking and a second caller is calling

I am programming an app, that automatically answers a call. The problem is, that it should not answer one if I am already in a call and someone is ringing. Is there a way to achieve that?

According to the doc, if I check the status with TelephonyManager it would be CALL_STATE_RINGING and not CALL_STATE_OFFTHEHOOK.

Do I have to add a variable that is set true on a changing Telephone state so I know that there is an ongoing call or is there a better solution?

Thanks!

/edit: I answer the call without the permission Modify_Phone_State, so it is only about finding out if there is already a call ongoing.

Upvotes: 4

Views: 670

Answers (2)

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Reputation: 6382

Okay, so as there is apparently no way to figure this out, I stored a Boolean in a SharedPreference as soon as the State goes to OFFTHEHOOK (true).

When the state changes to IDLE, I set the Boolean to false. So this means, if RINGING is fired while someone is already calling, I read out that the variable is true, and then discard the following actions.

For those who want more information on how to answer a call, have a look at the AutoAnswer Project

Upvotes: 1

Emmanuel Devaux
Emmanuel Devaux

Reputation: 3407

Tracking call state seams the best way, because your question is off the track of android standard.

There is no official answer to your question because :

By the Android API there is no official way for a third party application provider to answer to a phone call because
1 : you've to use undocumented API.
2 : request MODIFY_PHONE_STATE permission is only available for rooted/system signed application since 2.3

So if an efficient(build in code) working answer exist for your question, it may officially not working for every manufacturer/model devices.

more info at How to grant MODIFY_PHONE_STATE permission for apps ran on Gingerbread

Upvotes: 1

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